Object: a nearly empty tube (such as toothpaste), or a picture frame with a picture of a monkey, or a crayon box without crayons.

Who likes to be tricked? Sometimes it's fun, but most of the time we don't like to be tricked. We especially don't like to be tricked if we know that other people are trying to trick us. If I asked someone here to draw me a beautiful picture of a horse and there wasn't a horse to draw, you would think I was tricking you, wouldn't you? [Select someone.] OK, I don't care what you draw, just so that it is pretty. [Hand her the crayon box without any crayons. After she opens it ...] See what I mean! Sometimes people try to trick us. There are other times when something happens that no one meant to have happen. For instance, it seems like every time I go to brush my…